CVE-2021-21859

medium
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
5.5

Description

An exploitable integer truncation vulnerability exists within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. The stri_box_read function is used when processing atoms using the 'stri' FOURCC code. An attacker can convince a user to open a video to trigger this vulnerability.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-21859

OS impact

OSVersionStatusFixed in
arch archaffected
debian debianbullseyefixed1.0.1+dfsg1-4+deb11u1

References

Verify integrity in audit chain (admin only). AS-IS.